How do you differentiate the normal feeding vessel to the lunate from an erosion or power doppler signal on ultrasound?  

Distinguishing erosion from lacuna for feeding vessels on the dorsum of the lunate can be challenging, and most people have a lacuna in this location (Falkowski et al., PMID 32007818).  True erosions are more likely to be greater than 2mm in width and irregular, while vascular channels are typi...